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Method for preparing fine aggregate with construction waste and application of fine aggregate

A construction waste and fine aggregate technology, applied in applications, household utensils, ceramic products, etc., can solve problems such as unsatisfactory production needs, high production costs, and complicated processes, and achieve low cost, extended service life, and simple equipment structure Effect

Inactive Publication Date: 2019-10-11
广东道地中药有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there are many methods for preparing recycled aggregates from construction waste, but most of them are complicated in process and high in production cost, which cannot meet the production demand

Method used

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  • Method for preparing fine aggregate with construction waste and application of fine aggregate
  • Method for preparing fine aggregate with construction waste and application of fine aggregate
  • Method for preparing fine aggregate with construction waste and application of fine aggregate

Examples

Experimental program
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Effect test

Embodiment

[0033] The method provided by the invention prepares fine aggregate with construction waste, such as figure 1 As shown, it mainly includes the crushing step: use a crusher to crush the construction waste to obtain broken construction waste below 35mm; cycle screening step: the broken construction waste is sent to the rolling screen inclined on the bottom surface through the feeding device for secondary grade screening, such as figure 2 and image 3 As shown, the rolling screen includes an end cover 10 for the first stage of screening, a drum 20 affixed to the bottom of the end cover 10 for the second stage of screening, a casing 30 arranged outside the drum and used for driving The driving device (not shown) for the rotation of the rolling screen, the end cover 10 has an arc surface structure with the middle part concave toward the direction of the drum 20 and is composed of a grid-like screen with a grid side length of 15-20mm; the drum 20 is formed by winding a grid-shape...

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Abstract

The invention discloses a method for preparing fine aggregate with construction waste and application of the fine aggregate. The method for preparing the fine aggregate comprises the following steps of crushing and cyclic screening, wherein the crushing steps comprises crushing the construction waste with a crusher to obtain crushed construction waste with a grain size smaller than 35 mm; the cyclic screening step comprises conveying the crushed construction waste through a feeding device to a roller screen arranged at the bottom for secondary screening to obtain fine aggregate with a grain size smaller than 5 mm, conveying the construction waste with a grain size greater than 5 mm to the crusher for further crushing, and conveying the re-crushed construction waste through a second conveying device to the roller screen for processing, and performing the process repeatedly to obtain the fine aggregate. The obtained fine aggregate can be applied to preparing high-performance non-fired perforated bricks. The method for preparing the fine aggregate with the construction waste is simple in process, low in production cost and capable of achieving waste recycling and reutilization of theconstruction waste.

Description

technical field [0001] The invention relates to the field of construction waste reproduction, in particular to a method for preparing fine aggregate from construction waste and the application of the obtained fine aggregate. Background technique [0002] With the industrialization of our country. With the accelerated development of the urbanization process, the construction industry is also developing rapidly, and the accompanying construction waste is also increasing. As the saying goes, garbage is a resource that is misplaced, especially construction waste. Construction waste is mainly composed of inorganic non-metallic materials such as waste bricks, waste concrete, and waste sand. In addition, there are a small amount of steel, wood, plastic, and glass. These materials are a valuable asset after recycling. However, the utilization rate of waste bricks, waste concrete and waste sand is relatively low at present. [0003] In addition, there is a shortage of river sand i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B20/02C04B38/08C04B28/00
CPCC04B20/026C04B28/00C04B2111/40C04B2201/50C04B18/167C04B14/02C04B14/28C04B14/48C04B14/303C04B14/24C04B18/08C04B18/027C04B22/02C04B22/06C04B22/142C04B22/085C04B24/126C04B24/026C04B2103/302C04B2103/30C04B2103/22C04B2103/304C04B2103/0068
Inventor 沈小葵
Owner 广东道地中药有限公司
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